
\draw[black] (0.000000, 5.783589) --
 (2.000000, 3.396582) --
 (4.000000, 2.144880) --
 (6.000000, 0.511854) ;

\draw (0.000000, 5.783589) node {$\diamond$};
\draw (2.000000, 3.396582)  node {$\diamond$};
\draw (4.000000, 2.144880)  node {$\diamond$};
\draw (6.000000, 0.511854)  node {$\diamond$};
